Tobacco contains nicotine, which is addictive.

烟草含有丁，它可致人成瘾。

But they can take in higher levels of nicotine, which is addictive.

但吸入的丁会更多，而丁是会让人上瘾的。

This drug can pass through the placenta to an unborn baby.

丁可以通过胎盘进入胎儿体内。

In particular, nicotine is a highly flexible molecule.

丁是一种尤其高活性的分子。

Which might give nicotine-pushing plants, like tobacco, an edge.

这可为烟草等含有丁的植物带来优势。

Look, there are other ways to quit. You can try the nicotine patch, or nicotine chewing gum.

看，还有其他方法戒烟的。你可以试试丁贴片或丁口香糖。

Some get help from electronic cigarettes, medicine or nicotine patches that reduce one's desire for the drug.

一些人从电子香烟、药物或对丁渴望的丁贴片来寻求帮助。

92 were found to have higher nicotine yields than they did 6 years previously.

发现92种烟草的丁含量比6年前高。

Nicotine is an addictive element in tobacco.

丁是烟草中一种令人上瘾的成分。

Nicotine narrows your blood vessels and puts added strain on your heart.

丁可缩小血管宽度，增加心脏负荷。

Nobody's going like, oh, I'll just have this that tastes like nicotine.

没有人会喜欢去抽丁味的烟。

They contain carcinogens like nicotine and other toxins like arsenic.

它们含有丁等致癌物和砷等毒素。

Headaches and seizures are also common signs of nicotine poisoning.

头痛和癫痫也是丁中毒的常见病症。

It also decreases the amount of nicotine permitted in smoked tobacco products.

它还会烟草制品中允许的丁含量。

And nicotine is a stimulant, so avoid them too late in the day.

而且丁是一种兴奋剂，所以不要深夜摄入。

E-cigarettes create a vapor out of nicotine and other chemicals.

电子烟由丁和其他化学品制造出烟雾。

Health experts say nicotine is highly harmful to developing brains.

健康专家表示，丁对发育中的大脑极具危害。

Professor Terrence said nicotine is connected to high protease levels in the lungs.

特伦斯教授说，丁与肺部的高蛋白酶水平有关。

And if caffeine and nicotine have these effects on bees?

是否只有咖啡因和丁会对蜜蜂产生这些影响？

Nicotine is a toxin that stimulates your body to produce adrenaline.

丁是一种毒素，刺激你的身体产生肾上腺素。